Question

All number of phone dairy is multiply and than divide

Answer 1

The answer will be 1
let take an example
let take only three numbers be x , y and z
on multiplying them we get
xyz
on dividing it with the supposed numbers
xyz/ x = yz
yz/y = z
z/z = 1
hence the answer is 1

Answer 2

Heya mate,
here is your answer,

The numbers in our phone diary are
1,2,3,4,5,6,7,8,9,0
arranged in many groups as numbers

if we will multiply them the answer will be 0
since we have to multiple with zero as zero is a number of our phone diary and as we know anything multiplied with 0 is 0

Hence the product would be 0

And when we will divide them,
it would be 0/0 = undefined

Hence the answer is undefined.

Hope this helps

if you have any doubt or want any help you can ask me. i would like to help.

thank you

#Sneha
brainly benefactor